| 释义 |
cadmium Chem.|ˈkædmɪəm|
[f. cadmia calamine, the common ore of zinc, with which this metal is generally associated. The ending is that of other names of metals, as sodium, etc.]
a. A bluish-white metal, in its physical qualities resembling tin, found in small quantities chiefly in zinc ores. Symbol Cd.
1822J. Imison Sc. & Art II. 122 Cadmium..was discovered by M. Stromeyer in 1817, in ores of Zinc. 1863Watts Dict. Chem. (1879) I. 702 The only pure native compound of cadmium is the sulphide, called Greenockite. 1869Latest News 10 Oct. 15 Cadmium is obtained for commercial purposes, from zinc ores and furnace deposits.
b. attrib. = cadmic, as in cadmium oxide, cadmium sulphide, etc., cadmium compounds; cadmium (mercury) cell, a type of voltaic cell used as a standard of electromotive force; cadmium green, orange, red, pigments obtained from cadmium compounds; cadmium yellow, an intense yellow pigment, consisting of cadmium sulphide, artificially prepared.
1893Electrician 13 Oct. 645/2 Notes on the E.M.F. and Temperature Coefficient of the Cadmium Mercury Cell. 1908Phil. Trans. A. CCVII. 393 When the solution is saturated at all temperatures, i.e. when solid cadmium sulphate is always present in the cell, the name ‘Cadmium Cell’ has been frequently assigned to it in order to distinguish it from the original form. 1969W. Garner Us or Them War xxviii. 215 Jagger switched on the small cadmium cell torch, the light beam thrusting through the dark like a sword blade.
1873Fownes Chem. 395 Cadmium oxide is infusible.
1934H. Hiler Technique of Painting ii. 113 Cadmium greens..are mixtures of cadmium yellows and viridian or vert emeraude. 1936A. Huxley Olive Tree 297 His grey trees have shadows of cadmium green.
1895Montgomery Ward Catal. 253/1 Water colors..Pale cadmium yellow—cadmium orange—French blue. 1934H. Hiler Technique of Painting ii. 112 Cadmium orange, of the same chemical nature and composition as the yellow cadmiums,..and the most permanent of all the cadmium colours.
1886H. C. Standage Artists' Man. Pigments v. 47 Cadmium red..is a simple original pigment containing no base but cadmium. 1962Listener 18 Jan. 126/2, I love cadmium red orange.
1879O. N. Rood Chromatics xi. 180 Bright yellow pigments, such as..chrome-yellow, cadmium-yellow. |